2010 Mercedes ML-Class Owner's Manual - Page 251

Driving instructions ! Observe the following during off-road driving: RKeep doors, tailgate, windows, and tilt/ sliding sunroof closed whenever driving off-road. RAdjust vehicle speed to condition of terrain. The more uneven, rutty and steeper the terrain, the lower the speed should be. Drive through water slowly at an even speed, avoiding a bow wave. RBe especially careful when driving in unknown territory. It may be necessary to get out of the vehicle and scout the path you intend to take. RWatch out for obstacles, such as rocks, holes, tree stumps and ruts. RBefore driving through water, determine its depth. RDo not stop vehicle while immersed in water, and do not shut off the engine. RIn sandy soil, drive at a steady speed as allowed by conditions. This helps overcome the vehicle rolling resistance and reduces the likelihood of the vehicle sinking into the ground. RDo not initiate jumps with the vehicle. It interrupts the forward momentum of the vehicle. RAlways drive onto slopes with the engine running and the vehicle in gear. RDo not shift automatic transmission into neutral position N. G Warning! Do not reduce the tire inflation pressure before driving through sand. However, if you do so, remember to correct the tire inflation pressure before continuing your trip. Driving with reduced tire inflation pressure increases the risk of losing control of the vehicle and rolling over. 249 Checklist before off-road driving Engine oil level RCheck the engine oil level (Y page 214). Only with a proper oil level can the vehicle obtain a trouble-free oil supply, even on steep gradients. ! If the engine oil level warning lamp comes on while driving, stop the vehicle in a safe location or as soon at is safe to do so. Check the engine oil level. The engine oil level warnings should not be ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. Tires RCheck the tread depth and maintain specified tire inflation pressure. A placard with the recommended tire inflation pressures is located on the driver's door Bpillar (Y page 228). RCheck tires for possible damage and remove foreign objects. missing valve caps. RReplace Rims RDented or bent rims can cause tire inflation pressure loss and damage the tire beads. For this reason, check and, if necessary, change rims before driving off-road. Vehicle tool kit RCheck if the jack (Y page 270) is functional. RAlways take the vehicle tool kit, a strong tow rope, a shovel and a small plank (to put under the jack on sandy soil) with you. Z Operation